标题: BS EN 13077-2008 Devices to prevent pollution by backflow of potable water - Air [打印本页] 作者: cc523pate 时间: 2017-12-26 21:49:05 标题: BS EN 13077-2008 Devices to prevent pollution by backflow of potable water - Air
BS EN 13077-2008 Devices to prevent pollution by backflow of potable water - Air gap with non-circular overflow (unrestricted) - Family A - Type B